diff --git a/drivers/at86rf2xx/at86rf2xx_getset.c b/drivers/at86rf2xx/at86rf2xx_getset.c
index f6cec5aaac..01d3c09765 100644
--- a/drivers/at86rf2xx/at86rf2xx_getset.c
+++ b/drivers/at86rf2xx/at86rf2xx_getset.c
@@ -72,12 +72,12 @@ static int16_t _tx_pow_to_dbm_212b(uint8_t channel, uint8_t page, uint8_t reg)
         if (channel == 0) {
             /* Channel 0 is 868.3 MHz */
             dbm_to_tx_pow = &dbm_to_tx_pow_868[0];
-            nelem = sizeof(dbm_to_tx_pow_868) / sizeof(dbm_to_tx_pow_868[0]);
+            nelem = ARRAY_SIZE(dbm_to_tx_pow_868);
         }
         else {
             /* Channels 1+ are 915 MHz */
             dbm_to_tx_pow = &dbm_to_tx_pow_915[0];
-            nelem = sizeof(dbm_to_tx_pow_915) / sizeof(dbm_to_tx_pow_915[0]);
+            nelem = ARRAY_SIZE(dbm_to_tx_pow_915);
         }
 
         for (size_t i = 0; i < nelem; ++i) {
diff --git a/drivers/bmx280/include/bmx280_params.h b/drivers/bmx280/include/bmx280_params.h
index 98afd8df6d..4a6e574ff3 100644
--- a/drivers/bmx280/include/bmx280_params.h
+++ b/drivers/bmx280/include/bmx280_params.h
@@ -69,7 +69,7 @@ static const bmx280_params_t bmx280_params[] =
 /**
  * @brief   The number of configured sensors
  */
-#define BMX280_NUMOF    (sizeof(bmx280_params) / sizeof(bmx280_params[0]))
+#define BMX280_NUMOF    ARRAY_SIZE(bmx280_params)
 
 /**
  * @brief   Configuration details of SAUL registry entries
diff --git a/drivers/kw2xrf/kw2xrf_intern.c b/drivers/kw2xrf/kw2xrf_intern.c
index 0d2c90bed8..cd08c88fe1 100644
--- a/drivers/kw2xrf/kw2xrf_intern.c
+++ b/drivers/kw2xrf/kw2xrf_intern.c
@@ -45,7 +45,7 @@ void kw2xrf_disable_interrupts(kw2xrf_t *dev)
 void kw2xrf_update_overwrites(kw2xrf_t *dev)
 {
     kw2xrf_write_dreg(dev, MKW2XDM_OVERWRITE_VER, overwrites_direct[0].data);
-    for (uint8_t i = 0; i < sizeof(overwrites_indirect)/sizeof(overwrites_t); i++) {
+    for (uint8_t i = 0; i < ARRAY_SIZE(overwrites_indirect); i++) {
         kw2xrf_write_iregs(dev, overwrites_indirect[i].address,
                            (uint8_t *)&(overwrites_indirect[i].data), 1);
     }
diff --git a/drivers/ltc4150/ltc4150_last_minute.c b/drivers/ltc4150/ltc4150_last_minute.c
index 2fbf1b7790..6c068ba3bd 100644
--- a/drivers/ltc4150/ltc4150_last_minute.c
+++ b/drivers/ltc4150/ltc4150_last_minute.c
@@ -50,7 +50,7 @@ static void update_ringbuffer(ltc4150_last_minute_data_t *data,
         data->last_rotate_sec += 10;
         data->charged += data->buf_charged[data->ring_pos];
         data->discharged += data->buf_discharged[data->ring_pos];
-        if (++data->ring_pos >= sizeof(data->buf_charged)/sizeof(data->buf_charged[0])) {
+        if (++data->ring_pos >= ARRAY_SIZE(data->buf_charged)) {
             data->ring_pos = 0;
         }
         data->charged -= data->buf_charged[data->ring_pos];
diff --git a/drivers/sht1x/sht1x.c b/drivers/sht1x/sht1x.c
index f2a55cc013..4ff644fa19 100644
--- a/drivers/sht1x/sht1x.c
+++ b/drivers/sht1x/sht1x.c
@@ -422,7 +422,7 @@ int sht1x_init(sht1x_dev_t *dev, const sht1x_params_t *params)
     if (
         !dev ||
         !params ||
-        (((uint8_t)params->vdd) >= sizeof(sht1x_d1) / sizeof(sht1x_d1[0]))
+        (((uint8_t)params->vdd) >= ARRAY_SIZE(sht1x_d1))
         ) {
         return -EINVAL;
     }
@@ -443,7 +443,7 @@ int sht1x_init(sht1x_dev_t *dev, const sht1x_params_t *params)
 /*---------------------------------------------------------------------------*/
 int16_t sht1x_temperature(const sht1x_dev_t *dev, uint16_t raw)
 {
-    if (!dev || (dev->vdd >= sizeof(sht1x_d1) / sizeof(sht1x_d1[0]))) {
+    if (!dev || (dev->vdd >= ARRAY_SIZE(sht1x_d1))) {
         return INT16_MIN;
     }
 
@@ -520,7 +520,7 @@ int sht1x_read(const sht1x_dev_t *dev, int16_t *temp, int16_t *rel_hum)
 
     if (
         !dev ||
-        (dev->vdd >= sizeof(sht1x_d1) / sizeof(sht1x_d1[0])) ||
+        (dev->vdd >= ARRAY_SIZE(sht1x_d1)) ||
         (!temp && !rel_hum)
         ) {
         return -EINVAL;
diff --git a/drivers/sht2x/include/sht2x_params.h b/drivers/sht2x/include/sht2x_params.h
index 015cc97147..ced7de49ad 100644
--- a/drivers/sht2x/include/sht2x_params.h
+++ b/drivers/sht2x/include/sht2x_params.h
@@ -77,7 +77,7 @@ static const sht2x_params_t sht2x_params[] =
 /**
  * @brief   Get the number of configured SHT2X devices
  */
-#define SHT2X_NUMOF       (sizeof(sht2x_params) / sizeof(sht2x_params[0]))
+#define SHT2X_NUMOF       ARRAY_SIZE(sht2x_params)
 
 /**
  * @brief   Configuration details of SAUL registry entries
diff --git a/drivers/sht3x/sht3x_saul.c b/drivers/sht3x/sht3x_saul.c
index f56011a9cd..2c22fff369 100644
--- a/drivers/sht3x/sht3x_saul.c
+++ b/drivers/sht3x/sht3x_saul.c
@@ -22,7 +22,7 @@
 #include "sht3x.h"
 #include "sht3x_params.h"
 
-#define SHT3X_NUM      (sizeof(sht3x_params) / sizeof(sht3x_params[0]))
+#define SHT3X_NUM      ARRAY_SIZE(sht3x_params)
 extern sht3x_dev_t sht3x_devs[SHT3X_NUM];
 
 /**
diff --git a/drivers/soft_spi/soft_spi.c b/drivers/soft_spi/soft_spi.c
index 17fa34bd92..26a54dc017 100644
--- a/drivers/soft_spi/soft_spi.c
+++ b/drivers/soft_spi/soft_spi.c
@@ -39,7 +39,7 @@ static inline bool soft_spi_bus_is_valid(soft_spi_t bus)
 {
     unsigned int soft_spi_num = (unsigned int) bus;
 
-    if (sizeof(soft_spi_config) / sizeof(soft_spi_config[0]) < soft_spi_num) {
+    if (ARRAY_SIZE(soft_spi_config) < soft_spi_num) {
         return false;
     }
     return true;
diff --git a/drivers/srf04/include/srf04_params.h b/drivers/srf04/include/srf04_params.h
index 3ad2c38307..31fc03a1ed 100644
--- a/drivers/srf04/include/srf04_params.h
+++ b/drivers/srf04/include/srf04_params.h
@@ -55,7 +55,7 @@ static const srf04_params_t srf04_params[] = {
 /**
  * @brief   Number of SRF04 devices
  */
-#define SRF04_NUMOF     (sizeof(srf04_params) / sizeof(srf04_params[0]))
+#define SRF04_NUMOF     ARRAY_SIZE(srf04_params)
 
 #ifdef __cplusplus
 }